{
   document: {
      acknowledgments: [
         {
            organization: "Siemens",
            summary: "reported this vulnerability to CISA.",
         },
      ],
      category: "csaf_security_advisory",
      csaf_version: "2.0",
      distribution: {
         text: "Disclosure is not limited",
         tlp: {
            label: "WHITE",
            url: "https://us-cert.cisa.gov/tlp",
         },
      },
      lang: "en-US",
      notes: [
         {
            category: "legal_disclaimer",
            text: "All information products included in https://us-cert.cisa.gov/ics are provided \"as is\" for informational purposes only. The Department of Homeland Security (DHS) does not provide any warranties of any kind regarding any information contained within. DHS does not endorse any commercial product or service, referenced in this product or otherwise. Further dissemination of this product is governed by the Traffic Light Protocol (TLP) marking in the header. For more information about TLP, see https://us-cert.cisa.gov/tlp/.",
            title: "Legal Notice",
         },
         {
            category: "other",
            text: "This CISA CSAF advisory was converted from Siemens ProductCERT's TXT advisory.",
            title: "Advisory Conversion Disclaimer",
         },
         {
            category: "other",
            text: "Multiple",
            title: "Critical infrastructure sectors",
         },
         {
            category: "other",
            text: "Worldwide",
            title: "Countries/areas deployed",
         },
         {
            category: "other",
            text: "Germany",
            title: "Company headquarters location",
         },
         {
            category: "general",
            text: "CISA recommends users take defensive measures to minimize the exploitation risk of this vulnerability.",
            title: "Recommended Practices",
         },
         {
            category: "general",
            text: "Minimize network exposure for all control system devices and/or systems, and ensure they are not accessible from the internet.",
            title: "Recommended Practices",
         },
         {
            category: "general",
            text: "Locate control system networks and remote devices behind firewalls and isolate them from business networks.",
            title: "Recommended Practices",
         },
         {
            category: "general",
            text: "When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most recent version available. Also recognize VPN is only as secure as its connected devices.",
            title: "Recommended Practices",
         },
         {
            category: "general",
            text: "CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.",
            title: "Recommended Practices",
         },
         {
            category: "general",
            text: "CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.",
            title: "Recommended Practices",
         },
         {
            category: "general",
            text: "CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets. Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov in the technical information paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies.",
            title: "Recommended Practices",
         },
         {
            category: "general",
            text: "Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.",
            title: "Recommended Practices",
         },
         {
            category: "general",
            text: "As a general security measure, Siemens strongly recommends to protectnetwork access to devices with appropriate mechanisms. In order tooperate the devices in a protected IT environment, Siemens recommends toconfigure the environment according to Siemens' operational guidelinesfor Industrial Security (Download:https://www.siemens.com/cert/operational-guidelines-industrial-security),and to follow the recommendations in the product manuals.",
            title: "General Recommendations",
         },
         {
            category: "general",
            text: "Additional information on Industrial Security by Siemens can be foundat: https://www.siemens.com/industrialsecurity",
            title: "General Recommendations",
         },
         {
            category: "legal_disclaimer",
            text: "Siemens Security Advisories are subject to the terms and conditions containedin Siemens' underlying license terms or other applicable agreements previouslyagreed to with Siemens (hereinafter \"License Terms\"). To the extent applicableto information, software or documentation made available in or through aSiemens Security Advisory, the Terms of Use of Siemens' Global Website(https://www.siemens.com/terms_of_use, hereinafter \"Terms of Use\"), inparticular Sections 8-10 of the Terms of Use, shall apply additionally. In caseof conflicts, the License Terms shall prevail over the Terms of Use.",
            title: "Terms of Use",
         },
      ],
      publisher: {
         category: "coordinator",
         contact_details: "central@cisa.dhs.gov;\n Toll Free: 1-888-282-0870",
         name: "CISA",
         namespace: "https://www.cisa.gov/",
      },
      references: [
         {
            category: "self",
            summary: "SSA-346256: Vulnerability in SIMATIC WinCC OA V3.14 and prior",
            url: "https://cert-portal.siemens.com/productcert/txt/ssa-346256.txt",
         },
         {
            category: "self",
            summary: "ICS Advisory ICSA-18-254-04 JSON",
            url: "https://raw.githubusercontent.com/cisagov/CSAF/refs/heads/develop/csaf_files/OT/white/2018/icsa-18-254-04.json",
         },
         {
            category: "self",
            summary: "ICSA Advisory ICSA-18-254-04 - Web Version",
            url: "https://www.cisa.gov/news-events/ics-advisories/icsa-18-254-04",
         },
         {
            category: "external",
            summary: "Recommended Practices",
            url: "https://www.cisa.gov/uscert/ics/alerts/ICS-ALERT-10-301-01",
         },
         {
            category: "external",
            summary: "Recommended Practices",
            url: "https://www.cisa.gov/resources-tools/resources/ics-recommended-practices",
         },
         {
            category: "external",
            summary: "Recommended Practices",
            url: "https://www.cisa.gov/sites/default/files/publications/Cybersecurity_Best_Practices_for_Industrial_Control_Systems.pdf",
         },
         {
            category: "external",
            summary: "Recommended Practices",
            url: "https://www.cisa.gov/topics/industrial-control-systems",
         },
         {
            category: "external",
            summary: "Recommended Practices",
            url: "https://us-cert.cisa.gov/sites/default/files/recommended_practices/NCCIC_ICS-CERT_Defense_in_Depth_2016_S508C.pdf",
         },
         {
            category: "external",
            summary: "Recommended Practices",
            url: "https://www.cisa.gov/uscert/ics/tips/ICS-TIP-12-146-01B",
         },
      ],
      title: "ICSA-18-254-04 Siemens SIMATIC WinCC OA",
      tracking: {
         current_release_date: "2018-09-11T00:00:00.000000Z",
         generator: {
            engine: {
               name: "CISA CSAF Generator",
               version: "1.0.0",
            },
         },
         id: "ICSA-18-254-04",
         initial_release_date: "2018-09-11T00:00:00.000000Z",
         revision_history: [
            {
               date: "2018-09-11T00:00:00.000000Z",
               legacy_version: "1.0",
               number: "1",
               summary: "Publication Date",
            },
         ],
         status: "final",
         version: "1",
      },
   },
   product_tree: {
      branches: [
         {
            branches: [
               {
                  branches: [
                     {
                        category: "product_version_range",
                        name: "<V3.14-P021",
                        product: {
                           name: "SIMATIC WinCC OA V3.14 and prior",
                           product_id: "CSAFPID-0001",
                        },
                     },
                  ],
                  category: "product_name",
                  name: "SIMATIC WinCC OA V3.14 and prior",
               },
            ],
            category: "vendor",
            name: "Siemens",
         },
      ],
   },
   vulnerabilities: [
      {
         cve: "CVE-2018-13799",
         cwe: {
            id: "CWE-269",
            name: "Improper Privilege Management",
         },
         notes: [
            {
               category: "summary",
               text: "Improper access control to a data point of the affected product could allow an unauthenticated remote user to escalate its privileges in the context of SIMATIC WinCC OA V3.14. This vulnerability could be exploited by an attacker with network access to port 5678/TCP of the SIMATIC WinCC OA V3.14 server. Successful exploitation requires no user privileges and no user interaction. This vulnerability could allow an attacker to compromise integrity and availability of the SIMATIC WinCC OA system. At the time of advisory publication no public exploitation of this vulnerability was known.",
               title: "Vulnerability Summary",
            },
         ],
         product_status: {
            known_affected: [
               "CSAFPID-0001",
            ],
         },
         references: [
            {
               category: "external",
               summary: "web.nvd.nist.gov",
               url: "http://web.nvd.nist.gov/view/vuln/detail?vulnId=CVE-2018-13799",
            },
            {
               category: "external",
               summary: "www.first.org",
               url: "https://www.first.org/cvss/calculator/3.0#CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H/E:P/RL:O/RC:C",
            },
         ],
         remediations: [
            {
               category: "vendor_fix",
               details: "Update to V3.14-P021 and follow the steps at https://portal.etm.at/patchdownload.php?fp=version_3.14/win64vc12/ReadmeP021.txt for adding of modifying WinCC OA users in AD environments. - Download: https://portal.etm.at/index.php?option=com_content&view=category&id=67&layout=blog&Itemid=80",
               product_ids: [
                  "CSAFPID-0001",
               ],
               url: "https://portal.etm.at/patchdownload.php",
            },
            {
               category: "mitigation",
               details: "Siemens has identified the following specific workarounds and mitigations thatcustomers can apply to reduce the risk:allow manual remediation of the vulnerability fixed by WinCC OAV3.14-P021.for maintaining a secured SIMATIC WinCC OA environment. The steps described at https://portal.etm.at/patchdownload.php?fp=version_3.14/win64vc12/ReadmeP021.txt",
               product_ids: [
                  "CSAFPID-0001",
               ],
               url: "https://portal.etm.at/patchdownload.php",
            },
            {
               category: "mitigation",
               details: "Siemens has identified the following specific workarounds and mitigations thatcustomers can apply to reduce the risk:allow manual remediation of the vulnerability fixed by WinCC OAV3.14-P021.for maintaining a secured SIMATIC WinCC OA environment. Follow the SIMATIC WinCC OA Security Guideline (available at https://portal.etm.at/index.php?option=com_phocadownload&view=category&id=52:security&Itemid=81)",
               product_ids: [
                  "CSAFPID-0001",
               ],
               url: "https://portal.etm.at/index.php",
            },
            {
               category: "mitigation",
               details: "Siemens has identified the following specific workarounds and mitigations thatcustomers can apply to reduce the risk:allow manual remediation of the vulnerability fixed by WinCC OAV3.14-P021.for maintaining a secured SIMATIC WinCC OA environment. Apply Defense-in-Depth: https://www.siemens.com/cert/operational-guidelines-industrial-security",
               product_ids: [
                  "CSAFPID-0001",
               ],
               url: "https://www.siemens.com/cert/operational",
            },
         ],
         scores: [
            {
               cvss_v3: {
                  baseScore: 9.1,
                  baseSeverity: "CRITICAL",
                  vectorString: "CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H/E:P/RL:O/RC:C",
                  version: "3.0",
               },
               products: [
                  "CSAFPID-0001",
               ],
            },
         ],
      },
   ],
}